Why Does Your Tape Measure Have A Metal Thing On Its End?
This will probably blow your head if you’re not extremely handy. The small metal piece at the end of a tape measure can be extremely helpful.
It’s especially useful when putting up drywall if it’s serrated. The edge allows you to score softer surfaces with ease. While the bit moves back and forth slightly, it is actually compensation for the width of the metal hook, and it pushes in when measuring an inner surface and pulls out when measuring an outer surface. While moving the exact width of the metal hook, usually 1/16th of an inch, the bit stops the slight width from throwing off the measurement.